@book{7121,
	author = {Morse, Marston,},
	title = {The calculus of variations in the large /},
	publisher = {The American mathematical society,},
	year = {1960.},
	series = {American Mathematical Society.  Colloquium publications.  Vol. xviii},
	address = {New York :},
	note = {"The research of the writer has been oriented by a conception of what might be termed macro-analysis."--Foreword.}
}